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  <title>垃圾回收机制</title>
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  <h1>垃圾回收机制</h1>
<h2>目录</h2><ul class="chunklist chunklist_chapter"><li><a href="features.gc.refcounting-basics.html">引用计数基本知识</a></li><li><a href="features.gc.collecting-cycles.html">回收周期(Collecting Cycles)</a></li><li><a href="features.gc.performance-considerations.html">性能方面考虑的因素</a></li></ul>


  <p class="para">
   这部分将说明PHP 5.3的新的垃圾回收机制（也就是GC）的特点。
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